"...detailed guidance to Federal incident communicators on activities to be initiated in conjunction with incidents requiring a coordinated Federal response. It is applicable to all Federal departments and agencies responding under the NRF. It establishes mechanisms to prepare and deliver coordinated and sustained messages regarding incidents requiring a coordinated Federal response, and provides for prompt Federal acknowledgement of an incident and communication of emergency information to the public during incident management operations. The ICEPP is comprised of two annexes contained in the NRF: (1) Public Affairs Support Annex: Describes the interagency policies and procedures for incident communications with the public. (2) ESF #15 - External Affairs Annex: Outlines the functions, resources, and capabilities for external affairs". (DHS, NRF Public Affairs Support Annex, Jan 2008, 1)